Guide rail maintenance structure for linear module

Abstract

The utility model discloses a guide rail maintenance structure for a linear module, which comprises an oil cavity shell and felt, the oil cavity shell is arranged on a sliding table of the linear module, the oil cavity shell is provided with an oil storage cavity used for storing oil and loading the felt, and a window communicated with the oil storage cavity is arranged on the outer side of the oil cavity shell. The felt partially penetrates through the window to extend out of the oil cavity shell, and an oil injection hole which is communicated with the oil storage cavity and used for injecting oil into the oil storage cavity is further formed in the outer portion of the oil cavity shell. During use, an oil injector penetrates into the oil injection hole of the oil cavity shell to inject lubricating oil into the oil storage cavity of the oil cavity shell, the felt located in the oil storage cavity absorbs the lubricating oil, and a certain amount of lubricating oil is stored in the oil storage cavity of the oil cavity shell, so that it is guaranteed that oil is added to the felt all the time, frequent and independent oil adding to the felt is not needed, the oil adding period is shortened, and the oil adding efficiency is improved. The oiling frequency is reduced, the labor intensity of workers can be greatly reduced, the rail surface of the beam rail can be better cleaned and maintained by the felt, and the problem that the felt is frequently oiled is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear module product technical field, especially a guide rail maintenance structure for linear module. BACKGROUND

[0002] Linear module is a kind of device that can provide linear reciprocating motion, and is often applied in production operation with high transmission precision.

[0003] The utility model discloses a beam type linear driving module, including rail beam, sliding block, drive belt and drive end, its characterized in that: the rail beam is hollow structure;Rail beam has rail, connecting groove, antiskid line, connecting screw hole;The sliding block has wheel chamber, and there is guide wheel in wheel chamber;The sliding block has annular crossing type drive belt clamp, and drive belt clamp has convex tooth;The sliding block still has guide rail maintenance unit.

[0004] For example, the utility model discloses a beam type linear guide rail module, including guide rail beam, rail, sliding block, drive belt and drive end, and the guide rail beam is hollow section: the sliding block has guide rail cleaning maintenance piece;Guide rail cleaning maintenance piece is felt, scraper and the like, to clean rail.

[0005] The above two patents all adopt guide rail cleaning maintenance piece to clean rail. However, the guide rail cleaning maintenance piece is not provided with oil injection device to inject oil / oil to felt, so that the felt must be manually injected by injector and the like to inject oil / oil in a certain period, which is extremely inconvenient to operate, and the operation is frequent, which causes great trouble to users. Especially in the case of poor working condition, the rail surface of guide rail is also poor, so the felt needs to be cleaned and maintained constantly, at this time, the oil consumption of the felt is greatly increased, so the felt needs to be injected with oil / oil constantly in a short time, and the operation is more frequent.

[0006] Therefore, the present application provides the following technical scheme. UTILITY MODEL CONTENTS

[0007] The utility model aims at overcoming the defects of prior art, and provides a guide rail maintenance structure for linear module.

[0008] In order to solve the above technical problems, the utility model discloses the following technical scheme: the guide rail maintenance structure for linear module includes oil cavity shell and felt, the oil cavity shell is installed on the sliding table of linear module, the oil cavity shell has the oil storage cavity for storing oil and loading felt, and the oil cavity shell outside is provided with a window that is communicated with the oil storage cavity, the felt partially passes through the window to extend outside the oil cavity shell, and the oil cavity shell outside is also provided with the oil injection hole that is communicated with the oil storage cavity and is used for injecting oil to the oil storage cavity.

[0009] Further, in the above technical scheme, the oil cavity shell is provided with an inclined oil guide groove in the inner wall of the oil storage cavity, the upper end of the oil guide groove extends to the oil injection hole and is communicated with the oil injection hole, the outer surface of the felt is also in contact with the inner wall of the oil storage cavity, and the outer surface of the felt also completely or partially covers the oil guide groove.

[0010] Further, in the above technical scheme, the oil cavity shell is provided with a first spring, and the end of the first spring is pressed against the back side of the felt to provide elastic force to the felt, wherein the oil cavity shell is provided with a first positioning groove in the oil storage cavity, the back side of the felt is provided with a second positioning groove, and the two ends of the first spring are embedded in the first positioning groove and the second positioning groove respectively.

[0011] Further, in the above technical scheme, the oil injection hole is also embedded with an elastic oil injection plug for preventing oil leakage, the lower end of the elastic oil injection plug is provided with an oil injection groove upward, and the upper end of the elastic oil injection plug is provided with a deformable micro hole downward, the micro hole is communicated with the oil injection hole or directly communicated with the oil storage cavity.

[0012] Further, in the above technical scheme, the lower end of the elastic oil injection plug is integrally formed with an annular embedding part outside, the oil injection hole is provided with an annular limiting groove at the opening, and the annular embedding part is embedded in the annular limiting groove; the bottom of the oil injection groove is provided with a tapered groove body, and the tip of the tapered groove body is communicated with the micro hole.

[0013] Further, in the above technical scheme, the oil injection hole is also embedded with a one-way valve, and the one-way valve has an oil injection channel communicated with the oil storage cavity.

[0014] Further, in the above technical scheme, the one-way valve includes: a cylindrical valve body embedded in the oil injection hole, the cylindrical valve body is provided with the oil injection channel, and the end of the cylindrical valve body is provided with an oil injection port communicated with the oil injection channel; a second spring installed in the cylindrical valve body; a valve plug arranged at the oil injection port and in contact with the second spring, and the valve plug is pressed against the oil injection port to block the oil injection port under the elastic force of the second spring.

[0015] Further, in the above technical solution, the oil injection hole is provided with a step, and the end of the cylindrical valve body abuts against the step; wherein the end of the cylindrical valve body is not provided with a flange, and the other end of the second spring in contact with the valve plug also abuts against the step; or the end of the cylindrical valve body is provided with a flange, and the outer side of the flange abuts against the step, and the other end of the second spring in contact with the valve plug abuts against the inner side of the flange.

[0016] Further, in the above technical solution, the oil cavity shell comprises a main shell and a cover body fixed on the main shell, the oil storage cavity is formed between the main shell and the cover body, and the oil injection hole is arranged on the main shell or the cover body; wherein the main shell and the cover body are integrally formed by plastic, and are fixed together by ultrasonic fusion or are fixed and assembled by screwing a sealing ring through positioning groove and positioning column cooperation positioning; or the main shell and the cover body are made of metal, and are fixed and assembled by screwing a sealing ring through positioning groove and positioning column cooperation positioning.

[0017] Further, in the above technical solution, the number of the oil cavity shell is one, which is fixed on the front end or the rear end of the sliding table and located beside the roller arranged in the sliding table; or the number of the oil cavity shell is two, and the two oil cavity shells are integrally fixed on a side plate, which is locked by screwing on the outer side, the bottom or the top of the sliding table; or the number of the oil cavity shell is two, and the two oil cavity shells are integrally fixed on an end plate, which is locked by screwing on the front end face or the rear end face of the sliding table.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: the oil cavity shell added in the utility model is a component independent of the sliding table of the linear module, which is used for loading felt and storing lubricating oil. In specific use, the staff inserts the oil injection hole of the oil cavity shell with the oiler to inject lubricating oil into the oil storage cavity of the oil cavity shell. The felt in the oil storage cavity absorbs the lubricating oil. The oil storage cavity of the oil cavity shell stores a certain amount of lubricating oil to ensure that the felt is always oiled, so that the oiling cycle and frequency are reduced, the labor intensity is greatly reduced, and the felt can achieve better cleaning and maintenance of the rail surface of the beam rail, which is more convenient to use and solves the problem of frequent oiling of the felt. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the assembly drawing of the embodiment one of the utility model and the sliding table;

[0020] Figure 2 is the assembly drawing of the embodiment one of the utility model and the sliding table from another perspective;

[0021] Figure 3 is a perspective view of the embodiment one of the utility model;

[0022] Figure 4 is a perspective view of another view of the embodiment one of the utility model;

[0023] Figure 5 is a sectional view of the embodiment one of the utility model;

[0024] Figure 6 is a perspective view of the embodiment two of the utility model;

[0025] Figure 7 is a sectional view of the embodiment two of the utility model;

[0026] Figure 8 is a perspective exploded view of the embodiment two of the utility model;

[0027] Figure 9 is the assembly drawing of another structure and slide platform of the embodiment two of the utility model;

[0028] Figure 10 is a perspective view of another structure of the embodiment two of the utility model;

[0029] Figure 11 is a perspective exploded view of another structure of the embodiment two of the utility model;

[0030] Figure 12 is a sectional view of another structure of the embodiment two of the utility model;

[0031] Figure 13 is a sectional view of the third structure of the embodiment two of the utility model;

[0032] Figure 14 is the assembly drawing of the embodiment three of the utility model installed in linear module;

[0033] Figure 15 is Figure 14 the local enlarged view of A portion in the middle;

[0034] Figure 16 is a perspective view of the elastic oil injection plug in the embodiment three of the utility model;

[0035] Figure 17 is a perspective view of another view of the elastic oil injection plug in the embodiment three of the utility model. Specific embodiments:

[0036] The utility model is further explained below in combination with specific embodiments and drawings.

[0037] Embodiment one:

[0038] seeFigures 1-5 As shown, it is a guide rail maintenance structure for linear module, which comprises an oil cavity shell 1 and a felt 3.

[0039] The oil cavity shell 1 is used for loading felt 3 and oiling felt 3, and the oil cavity shell 1 is a component independent of the slide 2 of the linear module, and the oil cavity shell 1 is installed on the slide 2 of the linear module, and the felt 3 extends out of the oil cavity shell 1 and contacts the beam rail 61 on the linear module 6 (see Figures 14-15 As shown), the beam rail 61 is arranged on the beam 62, and the felt 3 moves back and forth on the beam rail 61 with the slide 2 to clean and maintain the rail surface of the beam rail 61, so that the roller 21 on the slide 2 and the beam rail 61 are more lubricated and have smaller friction, and then the slide moves more smoothly on the beam rail and has higher precision.

[0040] Specifically, the oil cavity shell 1 has an oil storage cavity 11 for storing oil and loading felt 3, and a window 12 is arranged outside the oil cavity shell 1 and communicates with the oil storage cavity 11, and the felt 3 partially passes through the window 12 to extend out of the oil cavity shell 1, and the oil cavity shell 1 is further provided with an oil injection hole 13 which communicates with the oil storage cavity 11 and is used for injecting oil into the oil storage cavity 11. In specific use, the staff inserts the oil injection hole 13 of the oil cavity shell 1 through the oil injection hole 13 of the oil cavity shell 1 with an oil injector (such as a needle cylinder syringe) to inject lubricating oil into the oil storage cavity 11 of the oil cavity shell 1, and the felt 3 in the oil storage cavity 11 absorbs the lubricating oil, and the oil storage cavity 11 of the oil cavity shell 1 stores a certain amount of lubricating oil to ensure that the felt 3 is oiled at all times without the need for frequent separate oiling of the felt 3, thereby reducing the oiling period and the number of oiling, which can greatly reduce the labor intensity, even in poor working conditions, because the oil storage cavity 11 of the oil cavity shell 1 stores a certain amount of lubricating oil, so that the felt does not need to be injected / oiled in a short time, which is more convenient to use, and solves the problem of frequent oiling of the felt 3.

[0041] The oil injection hole 13 can be arranged at a position higher than the bottom surface of the oil storage cavity 11, so as to prevent oil leakage. Alternatively, the oil injection hole 13 communicates with the middle part of the inner wall of the oil storage cavity 11, so that the position of the oil injection hole 13 communicating with the inner wall of the oil storage cavity 11 is higher than the position of the bottom surface of the oil storage cavity 11.

[0042] The oil cavity shell 1 is further provided with an inclined oil guide groove 111 on the inner wall of the oil storage cavity 11, and the upper end of the oil guide groove 111 extends to the oil injection hole 13 and communicates with the oil injection hole 13. The outer surface of the felt 3 also contacts the inner wall of the oil storage cavity 11, and the outer surface of the felt 3 also completely or partially covers the oil guide groove 111, and when the oil storage cavity 11 is injected through the oil injection hole 13, the lubricating oil can enter through the oil guide groove 111 and increase the contact area between the lubricating oil and the outer surface of the felt 3, so that the felt 3 can better absorb the lubricating oil, thereby achieving better oiling effect.

[0043] In the embodiment, the oil cavity shell 1 is further provided with a first spring 14, the end of the first spring 14 further abuts against the rear side of the felt 3 to provide elastic force to the felt 3, wherein the oil cavity shell 1 is provided with a first positioning groove 112 in the oil storage cavity 11, the rear side of the felt 3 is provided with a second positioning groove 31, the two ends of the first spring 14 are respectively embedded in the first positioning groove 112 and the second positioning groove 31, the first spring 14 provides elastic force to the felt 3, thereby ensuring that the felt 3 is driven to partially pass through the window 12 to extend out of the oil cavity shell 1 under the action of the elastic force of the first spring, so as to be in elastic contact with the beam rail rather than rigid contact in the later stage, and the felt 3 is stably attached to the beam rail, so that the lubricating oil can be better coated on the beam rail and the rail surface of the beam rail is cleaned.

[0044] The structure of the oil cavity shell 1 is that the oil cavity shell 1 comprises a main shell 101 and a cover 102 fixed on the main shell 101, and the oil storage cavity 11 is formed between the main shell 101 and the cover 102, and the oil injection hole 13 is arranged on the main shell 101 or the cover 102.

[0045] More specifically, the main shell 101 and the cover 102 are integrally formed by plastic, are positioned by the positioning groove and the positioning column, and are fixed together by ultrasonic fusion or are fixed and assembled by screwing a sealing ring. Alternatively, the main shell 101 and the cover 102 are made of metal, are positioned by the positioning groove and the positioning column, and are fixed and assembled by screwing a sealing ring. Regardless of which structure, the main shell 101 and the cover 102 need to be stably assembled together and achieve sealed assembly to avoid oil leakage.

[0046] In summary, the oil cavity shell 1 added in the utility model is a component independent of the straight line module sliding table 2, which is used for loading felt and storing lubricating oil. In specific use, a worker inserts an oil injector (such as a needle cylinder syringe) into the oil injection hole 13 of the oil cavity shell 1 to inject lubricating oil into the oil storage cavity 11 of the oil cavity shell 1, and the felt 3 in the oil storage cavity 11 absorbs the lubricating oil. The oil storage cavity 11 of the oil cavity shell 1 stores a certain amount of lubricating oil to ensure that the felt 3 is always oiled, and the felt 3 does not need to be oiled frequently, thereby reducing the oiling period and the number of oiling, greatly reducing the labor intensity. Even in poor working conditions, the oil storage cavity 11 of the oil cavity shell 1 stores a certain amount of lubricating oil, so that the felt does not need to be oiled for a short time, the felt better cleans and maintains the rail surface of the beam rail, and the felt is more convenient to use, thereby solving the problem of frequent oiling of the felt 3.

[0047] Embodiment two:

[0048] The difference between this embodiment and the above-mentioned embodiment one is that the oil injection hole 13 is provided with a one-way valve 4. Figures 6-13 As shown in the figure, the oil injection hole 13 is also inlaid and fixed with a one-way valve 4, which has an oil injection channel 40 communicating with the oil storage cavity 11. By setting the one-way valve 4, it can only allow the oil injection / oil filling from outside to inside of the oil storage cavity 11, and can prevent the lubricating oil stored in the oil storage cavity 11 from leaking out.

[0049] Specifically, the one-way valve 4 includes:

[0050] A cylindrical valve body 41 inlaid and fixed in the oil injection hole 13, which is provided with the oil injection channel 40, and the end of the cylindrical valve body 41 is provided with an oil injection port 411 communicating with the oil injection channel 40;

[0051] A second spring 42 installed in the cylindrical valve body 41;

[0052] A valve plug 43 provided at the oil injection port 411 and in contact with the second spring 42, and the valve plug 43 is pressed against the oil injection port 411 to block the oil injection port 411 under the elastic force of the second spring 42.

[0053] In this embodiment, the valve plug 43 can be a ball such as a steel ball.

[0054] When the one-way valve 4 works, the oil injector (such as a syringe injector) penetrates the oil injection port 411 of the cylindrical valve body 41 and presses against the valve plug 43, driving the valve plug 43 to compress the second spring 42, and the valve plug 43 then leaves the oil injection port 411, so that the oil injector (such as a syringe injector) extends into the oil injection channel 40 of the one-way valve 4, so that the lubricating oil can be smoothly injected into the oil injection channel 40; after completing the oil injection, the oil injector (such as a syringe injector) is withdrawn relative to the one-way valve 4, the second spring 42 in the one-way valve 4 is reset, and the second spring 42 pushes the valve plug 43 to press the valve plug 43 against the oil injection port 411, so as to block the oil injection port 411 and prevent oil leakage.

[0055] The oil injection hole 13 is provided with a step 131, and the end of the cylindrical valve body 41 abuts against the step 131.

[0056] The cylindrical valve body 41 has at least two structures:

[0057] The first one is combined with Figure 13 As shown in the figure, the end of the cylindrical valve body 41 has no flange, so that the other end of the second spring 42 in contact with the valve plug 43 also abuts against the step 131.

[0058] The second one is combined with Figure 12As shown, the cylindrical valve body 41 is provided with a flange 412 at the end, and the flange 412 is abutted on the step 131 outside, and the other end of the second spring 42 in contact with the valve plug 43 is abutted on the flange 412 inside.

[0059] In this embodiment, the oil cavity shell 1 is combined with the rolling wheel 21. Figures 6-8 As shown, the number of the oil cavity shell 1 is one, which is fixed on the front end or rear end of the sliding table 2 and located beside the rolling wheel 21 arranged in the sliding table 2. In actual use, the number of the felt oil injection structure of the utility model is four, which is respectively installed on both sides of the front end of the sliding table 2 and on both sides of the rear end of the sliding table 2.

[0060] Alternatively, the oil cavity shell 1 is combined with the rolling wheel 21. Figures 9-13 As shown, the number of the oil cavity shell 1 is two, and the two oil cavity shells 1 are integrally fixed on a side plate 100, which is locked on the outside, bottom or top of the sliding table 2 by screws. In actual use, the number of the felt oil injection structure of the utility model is two, which is respectively installed on the left side or right side of the sliding table 2 through the side plate 100 and located beside the two rolling wheels at the front end or rear end of the sliding table 2.

[0061] Alternatively, the number of the oil cavity shell 1 is two, and the two oil cavity shells 1 are integrally fixed on an end plate, which is locked on the outside end of the sliding table 2 by screws. In actual use, the number of the felt oil injection structure of the utility model is two, which is installed on the front end and rear end of the sliding table 2 through the end plate and located beside the two rolling wheels at the front end or rear end of the sliding table 2.

[0062] In addition to the above differences, the other structures of the second embodiment are basically the same as those of the first embodiment, and can achieve the technical effects as the first embodiment, and the second embodiment also achieves the effect of preventing oil leakage.

[0063] Embodiment three:

[0064] The difference between the third embodiment and the above-mentioned first embodiment is that the oil cavity shell 1 is combined with the rolling wheel 21. Figures 14-17 As shown,

[0065] The oil injection hole 13 is also inlaid with an elastic oil injection plug 5 for preventing oil leakage, the lower end of the elastic oil injection plug 5 is provided with an oil injection groove 51, and the upper end of the elastic oil injection plug 5 is provided with a deformable micro hole 52, which is communicated with the oil injection hole 13 or directly communicated with the oil storage cavity 11. After the elastic oil injection plug 5 is inlaid in the oil injection hole 13, the oil injection hole 13 can be blocked to prevent the lubricating oil stored in the oil storage cavity 11 from leaking out, thereby achieving the function of preventing oil leakage. Specifically, in actual use, an oil injection tool is inserted into the oil injection groove 51 of the elastic oil injection plug 5 and is in butt joint with the micro hole 52. At this time, the oil injection tool injects lubricating oil, which can smoothly pass through the micro hole 52 and enter the oil storage cavity 11 under the action of pressure. Even the micro hole 52 is squeezed to expand its inner diameter by the oil injection tool, and then the lubricating oil can smoothly pass through the micro hole 52 and enter the oil storage cavity 11 under the action of the injection pressure provided by the oil injection tool, thereby achieving the purpose of oil injection / oil filling of the oil storage cavity 11. When the oil injection tool is pulled out relative to the oil injection groove 51 of the elastic oil injection plug 5, the micro hole 52 can achieve the function of preventing oil from flowing out under the action of no pressure. In this embodiment, the size of the inner diameter of the micro hole 52 is 0.1-0.9mm, and more preferably 0.1-0.5mm.

[0066] The bottom of the oil injection groove 51 is provided with a tapered groove body 511, and the tip of the tapered groove body 511 is communicated with the micro hole 52. The tapered groove body 511 is used to adapt to the oil injection tool, which can make the oil outlet hole of the oil injection tool butt joint with the micro hole 52, so as to better provide the oil injection pressure to inject the lubricating oil and smoothly pass through the micro hole 52 into the oil storage cavity 11, thereby achieving the purpose of oil injection / oil filling of the oil storage cavity 11.

[0067] The lower end of the elastic oil injection plug 5 is further integrally formed with an annular inlaid part 53, and the opening of the oil injection hole 13 is provided with an annular limiting groove 132, and the annular inlaid part 53 is inlaid and fixed in the annular limiting groove 132, which achieves the purpose of stable assembly.

[0068] In this embodiment, the elastic oil injection plug 5 is made of silica gel or rubber or other elastic glue, which is simple to make, low in cost and convenient to install.

[0069] In addition to the above differences, the other structures of the third embodiment are basically the same as those of the first embodiment, and can achieve the technical effects of the first embodiment. The third embodiment also achieves the function of preventing oil leakage.

[0070] Of course, the above only the specific embodiments of the present application, not to limit the scope of the present application, all equivalent changes or modifications made in accordance with the principles of the present application described in the scope of the present application, should be included in the scope of the present application.

Claims

1. A guide rail maintenance structure for linear modules, characterized in that: It includes an oil chamber shell (1) and a felt (3). The oil chamber shell (1) is mounted on the slide table (2) of the linear module. The oil chamber shell (1) has an oil storage chamber (11) for storing oil and loading the felt (3). A window (12) communicating with the oil storage chamber (11) is provided on the outside of the oil chamber shell (1). The felt (3) partially passes through the window (12) to extend out of the oil chamber shell (1). An oil injection hole (13) communicating with the oil storage chamber (11) and used for injecting oil into the oil storage chamber (11) is also provided on the outside of the oil chamber shell (1).

2. The guide rail maintenance structure for linear modules according to claim 1, characterized in that: The oil chamber shell (1) is also provided with an inclined oil guide groove (111) on the inner wall of the oil storage chamber (11). The upper end of the oil guide groove (111) extends to the oil injection hole (13) and communicates with the oil injection hole (13). The outer surface of the felt (3) is also in contact with the inner wall of the oil storage chamber (11), and the outer surface of the felt (3) completely or partially covers the oil guide groove (111).

3. The guide rail maintenance structure for linear modules according to claim 1, characterized in that: The oil chamber shell (1) is also provided with a first spring (14), the end of which presses against the rear side of the felt (3) to provide elastic force to the felt (3). The oil chamber shell (1) is provided with a first positioning groove (112) in the oil storage chamber (11), and the rear side of the felt (3) is provided with a second positioning groove (31). The two ends of the first spring (14) are respectively embedded in the first positioning groove (112) and the second positioning groove (31).

4. The guide rail maintenance structure for linear modules according to claim 1, characterized in that: The oil injection hole (13) is also fitted with an elastic oil injection plug (5) for preventing oil leakage. The lower end of the elastic oil injection plug (5) is provided with an oil injection groove (51) facing upward, and the upper end of the elastic oil injection plug (5) is provided with a deformable micro hole (52) facing downward. The micro hole (52) is connected to the oil injection hole (13) or directly connected to the oil storage cavity (11).

5. The guide rail maintenance structure for linear modules according to claim 4, characterized in that: The lower outer side of the elastic oil plug (5) is also integrally formed with an annular inlay part (53), and an annular limiting groove (132) is provided at the opening of the oil injection hole (13). The annular inlay part (53) is embedded and fixed in the annular limiting groove (132). The bottom of the oil injection groove (51) is provided with a conical groove (511), and the tip of the conical groove (511) is connected to the micropore (52).

6. The guide rail maintenance structure for linear modules according to claim 1, characterized in that: The oil injection hole (13) is also fitted with a one-way valve (4), which has an oil injection channel (40) that connects to the oil storage chamber (11).

7. The guide rail maintenance structure for linear modules according to claim 6, characterized in that: The one-way valve (4) includes: A cylindrical valve body (41) is embedded and fixed in an oil injection hole (13). The cylindrical valve body (41) is provided with the oil injection channel (40), and the end of the cylindrical valve body (41) is provided with an oil injection port (411) that communicates with the oil injection channel (40). The second spring (42) is installed inside the cylindrical valve body (41); A valve plug (43) is located at the oil inlet (411) and contacts the second spring (42). The valve plug (43) presses against the oil inlet (411) under the elastic force of the second spring (42) to block the oil inlet (411).

8. The guide rail maintenance structure for linear modules according to claim 7, characterized in that: The oil injection hole (13) is provided with a step (131), and the end of the cylindrical valve body (41) abuts against the step (131); wherein, the end of the cylindrical valve body (41) has no flange, so that the other end of the second spring (42) that contacts the valve plug (43) also abuts against the step (131); or, the end of the cylindrical valve body (41) is provided with a flange (412), the outer side of the flange (412) abuts against the step (131), and the other end of the second spring (42) that contacts the valve plug (43) abuts against the inner side of the flange (412).

9. The guide rail maintenance structure for linear modules according to any one of claims 1-8, characterized in that: The oil chamber shell (1) includes a main shell (101) and a cover (102) fixed to the main shell (101). The oil storage chamber (11) is formed between the main shell (101) and the cover (102). The oil injection hole (13) is provided on the main shell (101) or the cover (102). The main shell (101) and the cover (102) are both integrally molded from plastic. They are positioned by positioning grooves and positioning posts, and are fixed together by ultrasonic melting or by screws and sealing rings. Alternatively, the main shell (101) and the cover (102) are both made of metal. They are positioned by positioning grooves and positioning posts, and are fixed together by screws and sealing rings.

10. The guide rail maintenance structure for linear modules according to any one of claims 1-8, characterized in that: The number of oil cavity shells (1) is one, which is fixed to the front or rear end of the slide table (2) and located next to the roller (21) provided inside the slide table (2); or, the number of oil cavity shells (1) is two, and the two oil cavity shells (1) are integrally fixed on a side plate (100), which is locked to the outside, bottom or top of the slide table (2) by screws; or, the number of oil cavity shells (1) is two, and the two oil cavity shells (1) are integrally fixed on an end plate, which is locked to the front or rear end face of the slide table (2) by screws.

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